WOODBRIDGE - Authorities say an Essex County man is accused of impersonating a police officer after he pulled over an off-duty cop on the Garden State Parkway last week.

Woodbridge Police Sgt. Charles Stab tells News 12 New Jersey that he was in his personal vehicle last week when Richard Goldrick, 68, of Nutley, pulled up behind him in a black Chevrolet Suburban with emergency lights flashing. Police say Goldrick fled as soon as both vehicles stopped.

Sgt. Stab reportedly obtained a description of the suspect and a license plate number. Goldrick was arrested the next day. Authorities say they found a .22-caliber gun and fraudulent documents in his car.

Sgt. Stab wants to remind New Jersey residents to trust their instincts if they are not sure if the person trying to pull them over is a real police officer.

He says, “If you think that you're stopped illegitimately and you're concerned for your safety, slow down, put your hazard lights on and call 911 while you continue to drive forward and find a well-lit area. If you know where your local police station is, pull in there.”

Goldrick is charged with impersonating a police officer and related offenses. He is being held on $52,000 bail.

The Associated Press wire services contributed to this report.